Mathematics, 16.11.2020 17:50 angelthompson2018

Scores obtained by students in an advanced placement test has a symmetric mound shaped (bell shaped) distribution with a mean of 70 and a standard deviation of 10. What is the proportion of students who received between 60 and 80 points.? a. about 95%
b. not enough information
c. about 99.7%
d. about 68%

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Scores obtained by students in an advanced placement test has a symmetric mound shaped (bell shaped)...